When we pay attention to crazy people, it only feeds their insanity. The thing to do is ignore them. Don't interact, don't engage. Treat them as what they are -- crazy people. Stay away from them. The absolute worst thing you can to is pretend you care about their nutty ramblings, because it only makes them crazier. When some libtard snowflake with purple hair and a nose ring comes up to you and starts complaining about white privilege or entitlement or safe zones or racism or manspreading or any of the other insane crap these crazies spout, just walk away.